Talking-machine.



D. S. EDMONDS. TALKING MACHINE. APPLIOATION FILED NOV. 19, 1907.

ATTORNEYS Patented M5119, 1909.

UNITED STATES PggIENT onrron.

DEAN S. EDMONDS, OF NEW YORK, N. Y., ASSIGNOR, BY MESXE ASSIGNMENTS, TOHAW- THORNE & SHEBLE MANUFACTURING COMPANY, OF PHILADELPHIA,PENNSYLVANIA,

A CORPORATION OF PENNSYLVANIA.

TALKING-MA CHINE Specification of Letters Patent.

Patented March 9, 1909.

Original application filed January 31,1907, Serial No. 354,972. Dividedand this application filed. November 19, 1907.

Serial No. 402,906.

To all whom it mayconcmf Be it known that I, DEAN S. EDMONDS, a citizenof the United States, residing in the borough of Manhattan, in the city,county, and State of New York, have invented a certain new and usefulImprovement in Talking-Machines, of which the following is a 5specification.

Thls invention relates to talking-machines,

particularly those of the type employing a disk sound-record.

The invention is directed to the provision i of means for exerting ayielding pressure 1 .upon the part carrying the reproducing mechanism,to movethe latter across the grooved portion of the record disk, ratherthan permitting the sound-box to be propelled across the disk by therecord-groove. In accordance with the invention, the reproducingmechanism is moved across the disk by the yieldmg-pressure device incorrespondence with the rotation of the disk, so that the stylus willtrack in the record-groove and give a faithful reproduction of the rejcorded sound, the sound-box being restrained against too rapid movementby the wall of i the record-groove toward the end of the spiral. Theprovision of such a yieldmgpressure device for feeding the stylus acrossthe record oilers many advantages; the

stylus will move automatically under the 5 pressure into the beginningof the recordroove, the wear on the record is materially T ecreased, andwhen a groove-wall is worn In through the machine will not repeat.accordance with tl1 e mvention,a spring is employed for providing theyielding pressure. The reproducing mechanism may be I secured to one endof a sound-conveying device, such as a tone-arm or amplifying-horn, andthis device maybe pivotally mounted upon a suitable su port adjacent tothe holder for the sound record. The spring is preferably arrangedbetween this support and the sound-conveying device and exerts yieldlngpressure on the latter to turn it about its pivot so asto move thereproducing mechanism across the record. With such a spring, I alsoemploy means for p reclud1ng movement of the sound-box entlrely acrossthe record to the center thereof. Such means is of importance, in orderto guard against injury to the stylus and sound-box,

} for if the reproducing mechanism were i moved by the yielding-pressuredevice-Joe- E yond the end of the record-groove, the stylus l and thelever carrying the same might eni gage the shaftof the record-holder orsuch a projection as is sometimes provided on the holder extendingt-hrougl'r an opening in the record.

I have illustrated an embodiment of my invention in the accompanyingdrawings, in which Figure 1 isan elevation of a talking-machine; Fig. 2is a section through the support and cradle on line 22 of Fig. 3 Fig. 3is an I enlarged detail view of some of the parts shown in Fig. 1 andFig. 4 is a detail view i in section on line 44 of Fig. '3.

Referring to these drawings, the machine comprises a motor-box 1 havingtherein a isuitable motor driving a turntable 2, on which rests therecord-disk 3 having a recordgroove therein on one or both of its faces.Secured to the box is anoutwardly-extending supporting arm 4 having avertically disposed opening through its outer end. A cradle 5, havingarms 6 with pads 7 on their jends, has a downwardly extending pin 8 isecured thereto and extending into the openabout which the cradle 5 andthe SO11'lltl-COI1 veying tube 9 carried thereby turn. Pin 8 may also beextended upwardly through an opening in tube 9, and the tube may besecured thereto by a nut .23, as shown in Flg. 2. A spring 18 is coiledabout the plvot 8 of the cradle 5'and the end of arm l, one end i ofthis spring being secured in an opening in the arm 4 and the other beingcaught around a part of the cradle 5. In order to arrest the movement ofthe cradle 5 and the horn 9 and re roducing mechanism 5-) carriedthereby w ieii the stylus, of the reproducing mechanism-has reached theend of the record-groove, coacting surfaces are provided on the cradleor a part moving therewith and upon the support for the cradle, whichsurfaces are brought into engagement at the conclusion of thereproduction to arrest further movement. Thus, a projection 21 is shownas formed upon the arm 4 and extending upwardly therefrom, and a pin 22is provided depending from'the cradle 5 in position to engage theprojection 21. These parts are so of the recent-groove, the spring 18will exert of a holder for a disk sound-record and positioned thattheycome into engagement 1 immediately after the stylus reaches the endi of the record-groove, so as to preclude further turning movement ofthe cradle 5 under the influence of spring 18. As thus 5 constructed,when the motor is started and] the stylus point positioned at thebeginning yielding pressure upon the cradle 5, the sound-conveyingdevice 9 and the reproducing mechanisn'i secured upon the end of. thelatter, to move the reproducing mechanism across the record incorrespondence with the rotation of the latter, too rapid movement ofthe reproducing mechanism being precluded by the coaction of the styluswith the wall of the record-groove. The pressure exerted by the springis a yielding one, and the spring is restored to potential relation inrestoring the reproducing mechanism'to its initial position for coactionwith the beginning of the record-groove again. With this construction,great care in positioning the stylus-point at the beginning of thegroove is unnecessary, as the point may be placed on the plane portionof the disk beyond the i groove and the spring will carry it over andinto the groove, thereby assuring the reproduction of the entireannouncement and selection. With such a yielding-pressure device, thewear on the record-groove is considerably less and when a wall of thegroove has been worn through repetition of the recorded sounds in thegroove adjacent to this Wall Will not take place. At the conclusion ofthe reproduction, the steps 21 and 22 come into engagement to precludefurther turning movement of the reproducing mechanism under theinfluence of spring 18.

Having now described my invention, what I claim as new therein anddesire to secure by Letters Patent is as follows 1. In atalking-machine, the combination means for rotating the same and therecord thereon, reproducmg mechanism including a stylus, a pivotedsound-conveying device carry ng sald mechanism, and a coiled sprmgconcentric with the pivot of said de- V106 and exerting a yieldingpressure thereon to move the same about its pivot and .carrv the saidmechanism across the record, saiil stylus being restrained in suchmovement by the record-groove and said .spring being restored topotential relation in restoring said device to initial position,substantially as set forth. v

2. In a talking-machine, the-combinatio of a motor-box, a turntable suported thereon, a disk sound-record on sald turntable, an arm secured toand extending outwardly from said box, a sound-conveying tube pivotallymounted on said arm, a soundox carried thereby and having a stylusbearing in the record-groove, and a spring connected at one end to saidarm and at the other to said tube for exerting a yielding pressure onthe tube to turn it on its pivot and carry the stylus across the record,said stylus being restrained in such movement by the record-groove,substantially as set forth.

3. In a talking-machine, the combination of g a motor-box, a turntablesupported thereon, a disk sound-record on said turntable, an arm securedto and extemling outwardly from said box, a sound-conveying tubepivotally mounted on said arm, a sound-box carried thereby and having astylus bearing in the record-groove, a spring connected at one end tosaid arm and at the other to said tube for exerting a yielding pressureon the tube to turn it on its pivot and carry the stylus across therecord, said stylus being restrained in such movement by therecord-groove, and stops for arresting the movement of the tube andstylus after the latter has reached the end of the recordgroove,substantially as set forth.

4. In a talking-machine, the combination of a holder for a sound-record,means for rotating the same and the record thereon, a support, asound-conveying devicepivotally mounted on said support, reproducingmechanism including a stylus carried by said device, a spring exertingyielding pressure on said device to move tie reproducm mechanism acrossthe sound-record so t at the stylus may track in and be restrained bythe record-groove, said spring being restored to potential relation inrestoring said device to initial position, and surfaces on said supportand device brought into engagement by the movement of said device underthe influence of said spring to arrest the movement of the reproducingmechanism, substantially as set forth.

5. In a talking-machine, the combination of a motor-box, a turntable suorted thereon, a disk sound-record on San turntable, an arm secured toand extending outwardly from said box, a cradle having a plurality ofoutwardly extendin support in -arms pivot-ally mounted on t e end ofsaid arm, a horn tapered from end to end supported on the ends of thesupportingarms of said cradle, a sound-box secured on the smaller end ofsaid horn having a stylus tracking in the groove in said sound-record,and means associated with said arm an cradle for exerting yieldingpressure on said born to move said sound-box in a plane substantiallyparallel to the surface of the sound-record so that the stylus thereofmay track in and be restrained by the recordgroove, substantially as setforth.

6. In a talking-machine, the combination of a motor-box, a turntablesupported thereon, a disk sound-record on said turntable having alaterally-undulating record-groove of substantially uniform depththerein, an arm secured to and extending outwardly from said box, acradle having a plurality of outwardly-extending supporting-arms pivilotally mounted on the end of said arm, a

horn tapered from end to end secured upon the supporting-arms of saidcradle, a soundbox secured on the smaller end of said horn having astylus tracking in the groove in said sound-record,.and meansbetweensaid arm and cradle for exerting yielding pressure-on said horn to movesaid sound-box across said sound-record so that the stylus thereof maytrack in and be restrained by the recordgroove, said means being soarranged that restoring said sound-box to its initial posi-\ potentialpo- Witnesses I. BARTLETT, I. McINTosH.

